Three vendors for the Space Force's Resilient GPS effort have successfully completed design concept reviews, a service spokeswoman told Inside Defense , while one contractor was removed from the program. The service issued Axient -- now part of Astrion -- a stop-work order in January, service spokeswoman Laura McAndrews confirmed this week. Meanwhile, Astranis, Sierra Space and L3Harris successfully completed design concept reviews, she said. “There were four originally, but we took one off because they weren’t performing,” Maj. Gen...